Using NCPM technique, we construct a synchronously Pumped fs infrared OPO.Tuning of the output wavelength of this OPO is realized via changing the Pumpingwavelength, and its tuning range is 1.08～1.13 μm. Under a pump power of 1.1 W of a90 fs Ti:sapphire laser, the average output power of the synchronously pumped OPO is100 mW, and the pulse duration is about 60 fs.